Civitas 10-1/2 C Mainspring size

Julian Smith

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Sep 1, 2000
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The 1951 Swartchild book has only one 10 1/2 ligne FM10C listed.There is a FMM2 but no spring listed.
The FM2C is 1.60 MM X .10 MM X 11 3/4 "
Hope this helps.
J Smith
 

Dave Haynes

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Sep 12, 2000
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The bestfit says 7-9-13 1/2 Dennison
I have a blue 6-9-13 if you are interested.
 

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